評(píng)估視頻質(zhì)量需要額外的，專門的，硬件和軟件。 DxO的視頻和防抖模塊提供您所需要的所有技術(shù)。 它包括用于評(píng)估運(yùn)動(dòng)相關(guān)問題的硬件，軟件和圖卡，視頻質(zhì)量在不斷變化的環(huán)境中的穩(wěn)定性以及基本的視頻質(zhì)量。
Photo stabilization
The effectiveness of Image stabilization systems ? whether optical or electronic ? is typically measured in stops. The Video & Stabilization module supports the CIPA protocol for performing this test. Combined with our optional shaking platform, the tests are not only simple to complete, but very repeatable, and operator-independent. The module is also able to measure the linear effect of motion blur.
Optional shaking (stabilization) platform
Camera and subject motion are two of the hardest aspects of video quality to measure in an accurate and repeatable way. DxO's Video module works seamlessly with our purpose-built Hexapod shake table and control software to give you confidence that you're testing your device under a variety of types of camera movement.
Video on textured chart
Rapidly changing lighting conditions represent a challenge for the Autoexposure (AE) and Auto White Balance (AWB) features of video capture devices. DxO's Video module evaluates how quickly and accurately your AE & AWB respond to changes in lighting using the included textured chart. Sharpness and texture-preservation are measured at the same time, for more efficient testing workflow.
Video stabilization
Measuring video stabilization is a more complex process than measuring it for still images. The Video & Stabilization module helps you characterize your device's effectiveness in a variety of ways. Translation, rotation, residual motion, and motion blur are all measured and reported out by time and frequency. In addition, deformation due to Electronic Rolling Shutter is measured.
Video on uniform chart
Consistency of video performance during a recording is critical for producing quality results. The Video & Stabilization module performs an extensive set of tests during the recording of a uniform background to help you characterize your camera's video stability. These include measuring the variation in exposure and white balance, as well as color shifts. Temporal and spatial noise are also measured, including row and column noise. To facilitate easy measurement, the module automatically handles a variety of input formats including Raw, AVI, TIFF, and JPEG.
Included charts and equipment
Dead Leaves chart DxO_TU0003_78
Uniform Grey chart
Hexapod stabilization platform + controller (optional extra)
